At least 10 people on board a cruise ship docked in the Japanese port of Yokohama have tested positive for coronavirus, health authorities say. Almost 300 of the 3,700 people on the Diamond Princess have been tested so far. The number of infected could rise. The checks began after an 80-year-old Hong Kong man who had been on the ship last month fell ill with the virus. Some 3,600 people on a second cruise ship docked in Hong Kong are also being tested. David Abel is one of 3,700 people in quarantine aboard a cruise ship docked near Yokohama, Japan. Ten people who tested have positive for coronavirus have been taken off the ship and to hospital, but everyone else must remain on board the Diamond Princess.